Finding the Fourth Proportional to 10,907.80, 16,363.86 and 3,982.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,907.80 : 16,363.86 = 3,982.12 : x
2. Step 2: Convert to fraction form
   10,907.80/16,363.86 = 3,982.12/x
3. Step 3: Cross multiply
   10,907.80x = 16,363.86 × 3,982.12
4. Step 4: Simplify right side
   10,907.80x = 65,162,854.18
5. Step 5: Solve for x
   x = 65,162,854.18/10,907.80
6. Step 6: Final answer
   x = 5,973.97